SU1216380A1 - System of power unit automatic regulation - Google Patents

Description

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The invention relates to a power system, namely to the automation of power unit management.

The purpose of the invention is to increase reliability by eliminating the failure of actuators when the external reference signal is changed.

The drawing shows a block diagram of the automatic control system.

The system contains an external signal sensor 1, an external process parameter sensors 2 and 3, relay control devices 4 and 5, control blocks 6 and 7, actuators 8 and 9, interrupt blocks 10 and 11, elements OR 12 and 13, elements 14 and 15 delays, and additionally contains a null-body 16, an integrator 17 with a constant rate of integration, a null-body 18, and a logical element OR-HE 19,

The system works as follows.

If at a constant value of the signal coming from the sensor 1 of an external master signal, the duration of the command pulses of the relay control devices 4 and 5 exceeds the specified allowable, at the outputs of the delay elements 14 and 15 that received this pulse through the elements OR 12 and 13, the signals in discrete signals are . These signals are command signals for interrupt units 10 and 11, as a result of which the command impulses from relay control devices 4 and 5 on their actuators 8 and 9 stop the flow of command pulses to control units B and 7

In the event that the magnitude of the signal coming from the sensor 1 of the external master signal changes, the passage of pulses longer than the specified time should not be forbidden 63802

for a time determined by the magnitude and rate of change of its input signal. For this, the signal from sensor 1 is fed to the input of the circuit, which is made of a series of series-connected on-organ 16, integrator 17 with a constant integration rate, a zero-organ 18, an IZH-19 logic element, forming a non-linear tracking system. Duration The presence of a mismatch signal at one of the outputs of the null organ 16 depends on the magnitude of the change in the signal of sensor 1, as well as on the speed of this change.

J5 By choosing the integration speed, this duration can be set to S so as to deliberately exceed the correctly formed command impulses of the relay control devices 2Q 4 and 5 when working on an external signal. The null organ 18 is tuned with a trigger limit greater than the null organ trigger limit 16 and selected from

5 conditions so that the signal at its output does not occur when the time of the command pulses of the relay control devices 4 and 5, determined by the change in the signal from sensor 1, must not exceed

walk given a valid. Thus, if a change in the master signal exceeds a value that, when tested, the duration of the commander pulses of the relay control devices 4 and 5 can exceed the specified allowable, a discrete signal appears at the output of the zero-body 18, which causes the output signal the logical element OR-NOT 19 of the zero discrete signal prohibiting the triggering of 6j3oKOB 10 and 11 interrupts for a time sufficient for the passage from the relay control devices 4 and 5 pulses of a duration exceeding the specified distance admissible.

Editor L. Gratilllo

Compiled by A. Zakharchenko

Tehred T. Tulik Corrector. Cherni

Order 975/38 Circulation 501 Subscription

VNIIPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

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Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

AUTOMATIC CONTROL SYSTEM FOR ENERGY UNIT containing an external control signal sensor, sensors of external technological parameters, relay “control devices in series, the inputs of which are connected to the outputs of sensors of external technological parameters, and control units, as well as actuators and interrupt units connected to the outputs of the latter, connected inputs through .elements OR and delay elements with outputs of relay control devices, and outputs with control inputs respectively control units, characterized in that, in order to increase reliability by eliminating the failure of actuators when the external driving signal changes, the system additionally contains sequentially installed first zero-organ, an integrator with a constant integration speed, a second zero-organ and a logical element OR-NOT, and the outputs of the sensor of the external reference signal and the integrator are connected to the inputs of both zero-organs, and the output of the logic element OR-NOT to the blocking inputs of all interrupt blocks Ania. SU „„ 1216380